Component alignment in total knee arthroplasty.

摘要: Prosthetic component positioning in total knee arthroplasty is a critical determinant of long-term survival the implant. The goal alignment to recreate normal mechanical axis lower extremity and achieve stable, balanced articulation. In addition position, it desirable select prosthesis size that, as closely possible, matches that patient. tibial usually placed perpendicular longitudinal tibia coronal plane and, depending on implant design, sloped neutral posteriorly sagittal plane. This differs from articular surface, which oriented slight varus. Because change orientation, desired femoral position also slightly anatomic configuration.